Perhaps you should try some spelling variations:
"supply cost international efforts." » "supply cost international airports.", "supply cost international energy.", "supply cost international airport.", "supply costs international efforts.", "supply first international efforts.", "supply joint international efforts."
"supply crowd integration theories." » "supply crowd integration theory.", "supply crowd integration through.", "supply crowd integration efforts.", "supply grid integration theories.", "supply trade integration theories.", "supply chain integration theories.", "supply growth integration theories.", "supply how integration theories."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply crowd integration theories.") OR ("supply cost international efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply crowd integration theories.\") OR (\"supply cost international efforts.\"))".
• Removing quotes may allow a broader search: (( supply crowd integration theories. ) OR ( supply cost international efforts. )).
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